摘要
为探讨盛果期苹果园的适宜负载量与树体光合和贮存营养的关系,以盛果期‘红富士’苹果树为试材,研究了连续3年不同负载量处理对果树叶片光合指标和树体贮存营养的影响。结果表明,各处理间随负载量的增加,叶片的Pn、CE和WUE呈逐渐下降趋势,表现为处理A>处理B>处理C>处理D>处理E。不同处理间叶片的CI和Tr则相反,表现为处理E>处理D>处理C>处理B>处理A;休眠期各处理间枝条和根系的贮存氮素、碳素营养随负载量的增大,呈降低的趋势,且随连续处理年数的增加,贮存营养降低的幅度加大。可见中等水平苹果园盛果期45000～60000kg/hm2的负载量,可保证树体正常的光合作用和较多的贮存营养,有利于连年丰产优质。
The ’ Red Fuji ’ apple trees in full fruit period were used to study on the relationship between the different capacity treatments and leaves photosynthetic and storage nutrition during three years.The results showed that increase of load,Pn,CE and WUE of leaves were gradually declined.Performance for treatment A〉 treatment B〉 treatment C〉 treatment D〉 treatment E,while the intercellular CI and Tr of leaves were treatment E〉 treatment D〉 treatment C〉 treatment B〉 treatment A.The storage nitrogen and carbon in the branches and roots of trees were reduced with the increase of amount of nutrition.As the continuous processing increase,amplitude of the reducing increased.The suitable capacity of apple garden under the medium management in full fruit period was 45000-60000 kg/hm 2,this might ensure the trees ’ normal photosynthesis and more storage nutrition and be helpful for years of high quality.
出处
《中国农学通报》
CSCD
2012年第22期163-167,共5页
Chinese Agricultural Science Bulletin
基金
现代农业苹果产业技术体系专项经费资助(MATS)
关键词
苹果
负载量
光合
贮存营养
影响
apple
capacity
photosynthetic
storage nutrition
effects
